THD of closed-loop analog PWM Class-D amplifiers

IEEE Transactions on Circuits and Systems I: Regular Papers

Volumn 55, Issue 6, 2008, Pages 1769-1777

  Shu, Wei ^a   Chang, Joseph S ^a  

^a NANYANG TECHNOLOGICAL UNIVERSITY   (Singapore)

Author keywords

Class D amplifier (CDA); Duty cycle error; Phase error; Total harmonic distortion (THD)

Indexed keywords

AUDIO SYSTEMS; ERRORS; FEEDBACK AMPLIFIERS; FOURIER SERIES; HARMONIC ANALYSIS; HARMONIC DISTORTION; POWER AMPLIFIERS; PULSE WIDTH MODULATION; WAVE FILTERS;

ANALYTICAL EXPRESSIONS; CLASS D AMPLIFIER; DOUBLE FOURIER SERIES; DUTY CYCLE ERROR; HARMONIC COMPONENTS; INPUT FREQUENCY; PHASE ERROR; TOTAL HARMONIC DISTORTION (THD);

FEEDBACK;

EID: 53849102567     PISSN: 10577122     EISSN: None     Source Type: Journal    
DOI: 10.1109/TCSI.2008.918000     Document Type: Article

References (13)

1. J. S. Chang, M. T. Tan, Z. Cheng, and Y. C. Tong, "Analysis and design of power efficient Class-D amplifier output stages," IEEE Trans. Circuits Syst. I, Fundam. Theory Appl., vol. 47, no. 6, pp. 897-902, Jun. 2000.
2. J. W. Lee, J. S. Lee, G. S. Lee, and S. A. Kim, "2 W BTL single-chip CDA with very high efficiency for audio applications," in Proc. ISCAS, 2000, vol. 5, pp. 493-496.
3. E. Gaalaas, B. Y. Liu, N. Nishimura, R. Adams, and K. Sweetland, "Integrated stereoδ;σ;Class-D amplifier," IEEE J. Solid-State Circuits, vol. 40, no. 12, pp. 2388-2397, Dec. 2005.
4. S. C. Li, V. C.-C. Lin, K. Nandhasri, and J. Ngarmnil, "New high efficiency 2.5V/0.45W RWDM Class-D Audio Amplifier for Portable Consumer Electronics," IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 52, no. 9, pp. 1767-1774, Sep. 2005.
5. B. Putzeys, "The truth about digital (Class-D) amplifiers," AudioHolics Online A/V Mag. Aug. 2004.
6. T. Ge, Joseph, and S. Chang, "Modeling and technique to improve PSRR and PS-IMD in analog PWM Class-D amplifiers," IEEE Trans. Circuits Syst. II, Exp. Briefs, accepted for publication..
7. W. Shu, Joseph, S. Chang, T. Ge, and M. Tong Tan, "Fourier series analysis of the nonlinearities in analog closed-loop PWM Class-D amplifiers," in Proc. ISCAS, 2006, p. 4.
8. C. M. Wu, W. Lau, and H. S. Chung, "Analytical technique for calculating the output harmonics of an H-bridge inverter with dead time," IEEE Trans. Circuits Syst. I, Fundam. Theory Appl., vol. 46, no. 5, pp. 617-627, May 1999.
9. M. T. Tan, J. S. Chang, H. C. Chua, and B. H. Gwee, "An investigation on the parameters affecting total harmonic distortion in a CDA," IEEE Trans. Circuits Syst. I, Fundam. Theory Appl., vol. 50, no. 10, pp. 1304-1305, Oct. 2003.
10. J. S. Chang, B. H. Gwee, Y. S. Lon, and M. T. Tan, "A novel low-power low-voltage Class-D amplifier with feedback for improving THD, power efficiency and gain linearity," in Proc. ISCAS, May 2001, vol. 1, pp. 635-638.
11. A. R. Oliva, S. S. Ang, and T. V. Vo, "A multi-loop voltage-feedback filterless Class-D switching audio amplifier using unipolar Pulse-Width-Modulation," IEEE Trans. Consum. Electron., vol. 50, no. 1, pp. 312-319, Feb. 2004.
12. H. S. Black, Modulation Theory. New York: Van Nostrand, 1953, pp. 263-281.
13. T. Ido, S. Ishizuka, L. Risbo, F. Aoyagi, and T. Hamasaki, "A digital input controller for audio class-D amplifiers with 100W 0.004% THD and 113 dB DR," in IEEE Int. Conf. Solid-State Circuits Dig. Tech. Papers, 2006, pp. 1366-1375.